Apparatus for metal-founding.



F. P. JOHNESS. APPARATUS Pon METAL FOUN'DING APPLICATION IILBD AUG. 18, 1904.

Patented Feb. l2, 1909.

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Y To all whom it may concer/a:k

iran srx'rns FRANK r. JoHNEss, or RAciNn'wisooNsiN.

VAPPARAUUS FOR MIETAIi--FOUNDING.V

Specification of Letters Patent.V

Ivatented Feb. 2, 1909.

` Application led August 18, 1904. Serial No. 221,206.

` Be it known that I, FRANK P. Joimnss, a citizen of the United States, and resident of Racine, in the county of Racine and State of Wisconsin, have invented certain new and useful Improvements in Apparatus for Metal-Founding; and I do hereby declare that the followingis a full, clear, vand exact description thereof( My invention has for its object to economize time and material .in foundries, and it consists in chaplets for use in connection with detachable, stems, as hereinafterl more particularly set forth with reference to the accompanying drawings and subsequently claimed. Y

Figure 1A of the drawings g represents a partly sectional elevation of a chaplet-stem in detachable connection with a chapletprint and set therewith in the sand of a sectionof a mold to impinge against a attern; Fig. 2 an elevation of a chaplet' an its detachable stem, the chaplet being in position to impinge against a core set in the mold; Fig. 3, a partly sectional elevation illustrating the chaplet in a fragment of a casting,- the stem being detached; Fig. 4, an end view of the chaplet shown in Figs. 2 and 3,' Fig. 5, a partly sectional elevation of another vform of chaplet, and Fi 6, an end. view ofk the K latter form of chap et.

Referring by letter to thev drawings, A indicates a preferably tubularv stem, B a chaplet-print and C a chaplet, the print and chaplet bein interchangeable with thel stem. The chap et-print is preferably a sleeve fand a pin rigid one upon the other, the sleeve being partly filled by the pin an exposed portionof which serves as a dowel with which the stem A has detachable connection iiush with said sleeve. one piece device partly tubular or otherwise at one end and reduced'at its other end to pro-V However the chaplet-print may be a of chaplet-print may be employed in doweljoint connection to form a stem or as an extension of the same.

rIhe chaplet-head is of variable form, but

in any form it has a preferably corrugated shouldered shank the reduced or dowel portion of which fits in the detachable stemthat is then flush with the remainder of said shank. The flat round head of one form of chaplet herein `shown is provided with a peripheral groove, this groove and the shankcorrugationsbein provided to insure a good bond of said chap et in a casting. However the chaplet-head and chaplet-shank may be otherwise irregular in the matter of contour l for the pur ose aforesaid.

The chap et best shown in Fig. 5, consists yof a segmental preferably sheet-metal head b of any predetermined radius, a headed wrought or cast-metal pin c countersunk in said head, central of the same, and a preferably corrugated shank d east on the pin. Y In foundry practice a stem A and chapletprint in detachable dowel-joint flush connection are set in the sand of a mold section, said print being in opposition to a pattern. On removal of the pattern, the chaplet-print is withdrawn from the stem and a chaplet substituted in detachable dowel-joint flush connection with said stem, the length of the chaplet being such that its head will impinge a core properly positioned in the mold. The joint of the stem and chaplet is always far enough in the sand to leave a good exposure of the chaplet-shank, and the bond of said chaplet and the casting is such that leakage insaid casting is avoided.

The casting being separated from the sand, Athe detachable stem is removed from the chaplet and saved for future use, the ro- 'truding portion of said chaplet being bro en or cut away close to said casting. This saving of the stem for use over and over .again is an economy in foundry practice, and the cost of my chaplets, designed for detachablestems on hand in a foundry, is less than that of those commonly employed. There is also advantage in the employement of detachable stems that may be utilized with interchangeable chaplet-prints and chaplets of variable length of shank, in `accordance with varying thickness of castings, whether each` of these stems be a single piece or a plurality of pieces in dowel-joint connection one with another. It has also been deter mined that there will be a saving of time in molding operations and greater accuracy of chaplet setting when chaplet prints and chaplets are employed interchangeably with stems such as are herein specified.

Having thus described my invention, what l claim as new, and desire to secure by Letters-Patent, is :w

l. A molders set of devices comprising a stem, a chaplet-print having an end dowel, and a chaplet having a dowel-end shank, the chaplet being substituted for the chapletprint in a mold and said stem having flushjoint engagement with the dowel of the interchangeable part in said mold.

2. A chaplet comprising a segmental head, a headed pin countersunk in the head, and a shank cast on the pin, this shank being detachably engageable with a stem.

3. A chaplet comprising a segmental head, a headed pin countersunk in the head, and a shank that is cast on the pin and has a dowel terminal detachably engageable with a stem.

il. A chaplet comprising a segmental head having a pin projecting therefrom rigid therewith, and a shank cast on the pin for detachable engagement with a stem.

ln testimony that l claim the foregoing I 1 have hereunto set my hand at Racine in the county of Racine and State ofi vWisconsin in thc presence of two witnesses.

FRANK l?. JOHNESS.

vliitnesses L. V. HiNns, W. H. CARPENTER. 

